Unit 1 What Can Internet Do for Us? 1
Unit 2 Online Auction 11
Unit 3 What Can Be Done about Computer Security? 21
Unit 4 Multimedia 30
Unit 5 Surviving the Next Operating System 38
Unit 6 Windows 95 IS An Interim System 47
Unit 7 Linux System Administration 57
Unit 8 Computer Viruses 68
Unit 9 The Internet 77
Unit 10 A Brief Introduction to Networks 87
Unit 11 Major Internet Sites for Online AD Sales 97
Unit 12 Use of Cookies 106
Key to Exercises 118
Appendix Ⅰ Supplementary Reading Materials 127
Appendix Ⅱ Scripts for Listening Practice 144
Appendix Ⅲ Word List 150